Modified clays and methods for making and using same

Details Modified clays and methods for making and using same Modified clays and methods for making and using same

2006-09-19

2006-09-19

Yoon, Tae H. (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S186000, C524S445000, C524S446000, C524S447000, C524S449000, C501S145000, C501S147000, C501S148000

Reexamination Certificate

active

07109257

ABSTRACT:
Processes for modifying the surface chemistry of a clay are disclosed. In one embodiment, there is provided a process for modifying the surface chemistry of a clay, wherein the process comprises: providing a clay dispersion comprising at least one unmodified clay wherein said clay has a first exchangeable cation; adding a second cation to the clay dispersion, wherein at least a portion of the second cation exchanges with at least a portion of the first cation to form a modified clay dispersion; and combining at least one polar containing agent with the modified clay dispersion to provide a modified clay.

REFERENCES:
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patent: 6414069 (2002-07-01), Pinnavaia et al.
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patent: 6914095 (2005-07-01), Lorah et al.
Makoto Ogawa and Kazuyuki Kuroda. “Preparation of Inorganic-Organic Nanocomposites through Intercalation of Organoammonium Ions into Layered Silicates”, Bull. Chem. Soc. Jpn, 70, 2593-2618 (1997).

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